Nonsingular Fast Terminal Sliding Mode Control Integrat-ed with Proportional Multi-Resonant-Based Controller for Multifunctional Grid-Tied LCL-Filtered Inverter
 
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1
Department of Electrical Engineering, Shiraz University of Technology, Shiraz, Iran
 
2
Université de Lorraine-GREEN F-54000 Nancy, France
 
These authors had equal contribution to this work
 
 
Corresponding author
Eshan Jamshidpour   

Université de Lorraine-GREEN F-54000 Nancy, France
 
 
Power Electronics and Drives 2025;10 (45)
 
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ABSTRACT
The growing utilization of nonlinear loads poses significant challenges to power quality in electrical grids. Nonlinear loads, such as three-phase diode rectifiers, produce substantial harmonics, necessitating effective control methods to mitigate harmonic distor-tions. The implementation of active power filters (APF) offers significant potential for enhancing harmonic compensation perfor-mance. Accordingly, this research introduces a nonsingular fast terminal sliding mode controller (NFTSMC) integrated with pro-portional multi-resonant (PMR) based control for a three-phase APF. The primary objective of this approach is to achieve rapid and precise tracking of reference currents while simultaneously injecting the desired currents into the electrical grid. Furthermore, to reduce harmonics generated by high switching frequency inverters, incorporating an LCL filter with an active damping strategy is essential. The PMR controller generates capacitor voltage references, ensuring zero steady-state error in the grid current and facilitating the implementation of the active damping method. Simulation results demonstrate the ordinary sliding mode controller (SMC) by achieving significantly lower total harmonic distortion (THD).,Additionally, it exhibits superior dynamic response and ro-bustness presence of uncertainties.
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